Forms: Date time field allows me to pick a time in from to time on a form but reverts

In an Adobe form I created I have a date/time from field and a date time to field.  When I select the from field the value stays.  As soon as I pick the to time field the from field reverts to another time.  This also works vise versa.  My format on the field is h:MM tt which seems to work.  

I have seen several post to manually enter the values instead of using the picker but it does not like the format no mater how I type the value in.  Any help appreciated.